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Victory Global Natural Resources Fund  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading Victory Global Natural Resources Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The Victory Global Natural Resources Fund (the "Fund") seeks to provide long-term capital appreciation.
Expense [Heading] rr_ExpenseHeading Fund Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your immediate family invest, or agree to invest in the future, at least $50,000 in the Victory Funds. More information about these and other discounts is available in Investing with the Victory Funds on page 16 of the Fund's Prospectus, in Appendix A - Variations in Sales Charge Reductions and Waivers Available Through Certain Intermediaries and from your Investment Professional.
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fee (fees paid directly from your investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses are deducted from fund assets as a percentage of average daily net assets)
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination Apr. 30, 2021
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover:
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover will generally indicate higher transaction costs, resulting in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal period, the Fund's portfolio turnover rate was 24% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 24.00%
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales charge discounts if you and your immediate family invest, or agree to invest in the future, at least $50,000 in the Victory Funds.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
Expense Example [Heading] rr_ExpenseExampleHeading Example:
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

The following example is designed to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods shown and then sell all of your shares at the end of those periods (or continue holding your shares in the case of Class C shares). The example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The amounts shown reflect any fee waiver/expense reimbursement in place through its expiration date. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption If you sell your shares at the end of the period
Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption If you do not sell your shares at the end of the period
Expense Example Closing [Text Block] rr_ExpenseExampleClosingTextBlock

The example does not reflect sales charges (loads) on reinvested dividends and other distributions. If these sales charges (loads) were included, your costs would be higher.
Strategy [Heading] rr_StrategyHeading Principal Investment Strategy
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

The Fund invests, under normal circumstances, at least 80% of its assets in securities of companies that SailingStone Capital Partners LLC, the Fund's sub-adviser, ("SailingStone") considers to be principally engaged in natural resources industries. The Fund may invest in securities of issuers located anywhere in the world and normally will invest in securities of companies located in at least three countries, which may include the United States.


The Fund is non-diversified and expects to hold a larger portion of its assets in a smaller number of issuers. The Fund will likely hold a more limited number of securities than many other mutual funds. The Fund's investment team currently expects that the Fund typically will hold between 15 and 30 securities positions.


In evaluating investments for the Fund, SailingStone conducts fundamental analysis focused on the following factors: supply cost curve of a given commodity, asset location along that curve to identify "advantaged assets," inventory of future projects which provide the basis for future value creation, management team quality to determine capital allocation discipline and history of value creation, and country risk. "Advantaged assets" are the low cost producers of a given commodity that SailingStone believes offer a competitive advantage in the form of achieving higher returns on capital relative to their cost of capital and the returns of other producers.


SailingStone believes that investments in the securities of advantaged producers run by capable management teams can create value for long-term investors independent of commodity prices. Valuation is an important part of the investment process. SailingStone seeks to purchase interests in companies with these characteristics when it believes the stock price reflects a limited possibility of permanent capital impairment.


SailingStone seeks to identify companies that have the potential to provide favorable long-term investment performance in any of the natural resources industries over a commodity price cycle. The Fund invests in companies of any size, although it is likely that many of the companies offering the most attractive long-term returns will be smaller and medium-sized companies. SailingStone does not attempt to replicate within the Fund's portfolio the commodity exposures of broad natural resources equity indices or to replicate or approximate any index return. As a result, the representations of the various natural resources equity industries in the Fund's portfolio will likely differ significantly from the representations of those same industries in any one or more natural resources equity indices, and the Fund's investment performance will likely differ, at times substantially, from that of such indices.


Companies in natural resources industries include companies that SailingStone considers to be principally engaged in the discovery, development, production, or distribution of natural resources; the development of technologies for the production or efficient use of natural resources; or the furnishing of related supplies or services. Natural resources may include, for example, energy sources, precious and other metals, forest products, real estate, food and agriculture, and other basic commodities.


A particular company will be considered to be principally engaged in natural resources industries if at the time of investment at least 50% of the company's assets, gross income, cash flow, or net profits is, in SailingStone's judgment, committed to, or derived from, those industries. A company will also be considered to be principally engaged in natural resources industries if SailingStone believes that the company has the potential for capital appreciation primarily as a result of particular products, technology, patents, or other market advantages in natural resources industries.


SailingStone regularly reviews the Fund's investments and will sell securities when it believes the securities are no longer attractive because of valuation; however there are a number of other reasons that could result in a position being reduced or sold. These include (1) a poor capital allocation decision, (2) a change in project economics and/or a change in the cost curve, (3) a change in above-ground risk, (4) a change in balance sheet risk, (5) a change in management or management execution, and (6) a change in governance practices.


From time to time, the Fund may make investments in private placements. In addition, the Fund may at times, but will not necessarily, hold a substantial portion of its assets in cash and cash equivalents.
Risk [Heading] rr_RiskHeading Principal Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

The Fund's investments are subject to the following principal risks:


Equity Risk – The value of the equity securities in which the Fund invests may decline in response to developments affecting individual companies and/or general economic conditions in the United States or abroad. A company's earnings or dividends may not increase as expected (or may decline) because of poor management, competitive pressures, reliance on particular suppliers or geographical regions, labor problems or shortages, corporate restructurings, fraudulent disclosures, man-made or natural disasters, military confrontations or wars, terrorism, public health crises, or other events, conditions and factors. Price changes may be temporary or last for extended periods.


Stock Market Risk – Overall stock market risks may affect the value of the Fund. Domestic and international factors such as political events, war, trade disputes, interest rate levels and other fiscal and monetary policy changes, pandemics and other public health crises and related geopolitical events, as well as environmental disasters such as earthquakes, fire and floods, may add to instability in world economies and markets generally. The impact of these and other factors may be short-term or may last for extended periods.


Natural Resources Investment Risk – Investment in companies in natural resources industries can be significantly affected by (often rapid) changes in supply of, or demand for, various natural resources. They may also be affected by changes in energy prices, international political and economic developments, environmental incidents, energy conservation, the success of exploration projects, changes in commodity prices, and tax and other government regulations. For example, the COVID-19 pandemic has drastically reduced the demand for various natural resources, including oil, and has drastically increased the price volatility of natural resources and companies within the natural resources industry. An extended period of reduced (or negative) prices may significantly lengthen the time that companies within the natural resources industries would need to recover after a stabilization of prices. Investments in interests in oil, gas or mineral exploration or development programs, including pipelines, may be held through master limited partnerships ("MLPs"), which are generally subject to many of the risks that apply to partnerships and may also be subject to certain tax risks.


Non-Diversified Risk – As a non-diversified fund, the Fund may invest a larger portion of its assets in a smaller number of issuers. This could make the Fund more susceptible to economic or credit risks than a diversified fund.


Concentration Risk – Concentrating investments in the natural resources sector increases the risk of loss because the stocks of many or all of the companies in the sector may decline in value due to developments adversely affecting the sector. In addition, investors may buy or sell substantial amounts of the Fund's shares in response to factors affecting or expected to affect the natural resources sector, resulting in extreme inflows and outflows of cash into and out of the Fund. Such inflows or outflows might affect management of the Fund adversely to the extent they cause the Fund's cash position or cash requirements to exceed normal levels.


Foreign Securities Risk – Foreign securities (including depositary receipts) are subject to political, regulatory, and economic risks not present in domestic investments. Foreign securities could be affected by factors not present in the U.S., including expropriation, confiscation of property, and difficulties in enforcing contracts. Compared to U.S. companies, there generally is less publicly available information about foreign companies and there may be less governmental regulation and supervision of foreign companies. Foreign securities generally experience more volatility than their domestic counterparts. In addition, to the extent investments are made in a limited number of countries, events in those countries will have a more significant impact on the Fund. Fluctuations in the exchange rates between the U.S. dollar and foreign currencies, currency exchange control regulations, and restrictions or prohibitions on the repatriation of foreign currencies may negatively affect an investment.


Smaller Capitalization Stock Risk – Small and mid-sized companies may be subject to a number of risks not associated with larger, more established companies, potentially making their stock prices more volatile and increasing the risk of loss. Smaller companies may have limited markets, product lines, or financial resources and lack management experience and may experience higher failure rates than larger companies.


Emerging Markets Risk – The risks related to investing in foreign securities are generally greater with respect to securities of companies that conduct their business activities in emerging markets or whose securities are traded principally in emerging markets. The risks of investing in emerging markets include the risks of illiquidity, increased price volatility, smaller market capitalizations, less government regulation, less extensive and less frequent accounting, financial and other reporting requirements, risk of loss resulting from problems in share registration and custody, substantial economic and political disruptions and the nationalization of foreign deposits or assets.


Liquidity Risk – Lack of a ready market or restrictions on resale may limit the ability of the Fund to dispose of certain holdings quickly or at prices that represent true market value in the judgment of the Adviser. In addition, the Fund, by itself or together with other accounts managed by the Adviser, may hold a position in a security that is large relative to the typical trading volume for that security, which can make it difficult for the Fund to dispose of the position at an advantageous time or price. Illiquid securities and relatively less liquid securities may also be difficult to value. Liquidity risk may also refer to the risk that the Fund may not be able to pay redemption proceeds within the allowable time period because of unusual market conditions, unusually high volume of redemptions, or other reasons. To meet redemption requests or to raise cash to pursue other investment opportunities, the Fund may be forced to sell securities at an unfavorable time and/or under unfavorable conditions, which may adversely affect the Fund.


Cash Position Risk – To the extent the Fund holds assets in cash and cash equivalents, the ability of the Fund to meet its objective may be limited.


Private Placement Risk – A private placement involves the sale of securities that have not been registered under U.S. or foreign securities laws to certain institutional and qualified individual purchasers. In addition to the general risks to which all securities are subject, securities received in a private placement generally are subject to strict restrictions on resale, and there may be no liquid secondary market or ready purchaser for such securities. Securities sold through private placements are not publicly traded and, therefore, are less liquid. Companies seeking private placement investments tend to be in earlier stages of development and have not yet been fully tested in the public marketplace.


Management Risk – The portfolio manager may not execute the Fund's principal investment strategy effectively.


You may lose money by investing in the Fund. There is no guarantee that the Fund will achieve its objective. An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency.


By itself, the Fund does not constitute a complete investment plan and should be considered a long-term investment for investors who can afford to weather changes in the value of their investment.
Risk Lose Money [Text] rr_RiskLoseMoney You may lose money by investing in the Fund.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus As a non-diversified fund, the Fund may invest a larger portion of its assets in a smaller number of issuers. This could make the Fund more susceptible to economic or credit risks than a diversified fund.
RIsk Not Insured [Text] rr_RiskNotInsured An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Investment Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The bar chart and table that follow are intended to help you understand some of the risks of investing in the Fund. The bar chart shows you how the Fund's calendar year performance has varied over the past 10 years (or the life of the Fund if shorter). The table compares the Fund’s average annual total returns of the Fund's share classes, including applicable maximum sales charges, over the same period to one or more broad measures of market performance, which have characteristics relevant to the Fund's investment strategy. We assume reinvestment of dividends and distributions.


Performance data for the classes varies based on differences in their fee and expense structures. The Fund's past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information is available on the Fund's website at VictoryFunds.com.


Performance information for the Fund's Class A, C, R and Y shares prior to July 30, 2016 reflects the historical performance of, respectively, the Class A, C, K and Y shares of the RS Global Natural Resources Fund, a series of RS Investment Trust (the predecessor to the Fund managed by RS Investment Management Co. LLC and sub-advised by SailingStone) (the "predecessor fund"). The Fund's performance has not been restated to reflect any differences in expenses paid by the predecessor fund and those paid by the Fund.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart and table that follow are intended to help you understand some of the risks of investing in the Fund.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress VictoryFunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The Fund's past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Calendar Year Returns for Class A Shares
Bar Chart Narrative [Text Block] rr_BarChartNarrativeTextBlock

(Applicable sales loads or account fees are not reflected in the bar chart. If these amounts were reflected, returns would be less than those shown.)
Bar Chart Does Not Reflect Sales Loads [Text] rr_BarChartDoesNotReflectSalesLoads Applicable sales loads or account fees are not reflected in the bar chart. If these amounts were reflected, returns would be less than those shown.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Highest Quarter 22.42% (quarter ended June 30, 2016) 
Lowest Quarter -38.97% (quarter ended December 31, 2018) 
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2016
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 22.42%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2018
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (38.97%)
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes Index returns reflect no deduction for fees, expenses, or taxes excluding foreign withholding taxes.
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns use the historical highest individual federal marginal income tax rates and do not reflect the effect of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred After-tax returns shown are not relevant if you own your Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown for only one share class. The after-tax returns for other classes will vary.
Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock

After-tax returns use the historical highest individual federal marginal income tax rates and do not reflect the effect of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant if you own your Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for only one share class. The after-tax returns for other classes will vary.
Average Annual Return, Caption rr_AverageAnnualReturnCaption Average Annual Total Returns (For the Periods Ended December 31, 2019)
Victory Global Natural Resources Fund | MSCI World Commodity Producers Index Index returns reflect no deduction for fees, expenses, or taxes excluding foreign withholding taxes.  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 11.64%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 0.98%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 0.39%
Victory Global Natural Resources Fund | S&P North American Natural Resources Sector Index™ Index returns reflect no deduction for fees, expenses, or taxes.  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 17.63%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 (1.41%)
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 1.39%
Victory Global Natural Resources Fund | S&P 500® Index Index returns reflect no deduction for fees, expenses, or taxes.  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 31.49%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 11.70%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 13.56%
Victory Global Natural Resources Fund | Class A  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.75%
Maximum Deferred Sales Charge (Load) (as a percentage of the lower of sale proceeds or the original offering price) rr_MaximumDeferredSalesChargeOverOther none [1]
Management Fees rr_ManagementFeesOverAssets 1.00%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.44%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.69%
Fee Waiver/Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.21%) [2]
Total Annual Fund Operating Expenses After Fee Waiver/Expense Reimbursement rr_NetExpensesOverAssets 1.48% [2]
Expenses Deferred Charges [Text Block] rr_ExpensesDeferredChargesTextBlock A contingent deferred sales charge of 0.75% may be imposed on Class A shares with respect to purchases of $1,000,000 or more that are redeemed within 12 months of purchase. For additional information, see the section entitled Choosing a Share Class.
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 717
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,058
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,421
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,441
Annual Return 2010 rr_AnnualReturn2010 25.52%
Annual Return 2011 rr_AnnualReturn2011 (7.31%)
Annual Return 2012 rr_AnnualReturn2012 6.10%
Annual Return 2013 rr_AnnualReturn2013 (0.60%)
Annual Return 2014 rr_AnnualReturn2014 (22.84%)
Annual Return 2015 rr_AnnualReturn2015 (38.17%)
Annual Return 2016 rr_AnnualReturn2016 53.13%
Annual Return 2017 rr_AnnualReturn2017 1.02%
Annual Return 2018 rr_AnnualReturn2018 (45.81%)
Annual Return 2019 rr_AnnualReturn2019 (24.49%)
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 (28.81%)
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 (18.08%)
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 (9.99%)
Victory Global Natural Resources Fund | Class A | After Taxes on Distributions  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 (28.81%)
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 (18.08%)
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 (10.29%)
Victory Global Natural Resources Fund | Class A | After Taxes on Distributions and Sale of Fund Shares  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 (17.06%)
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 (12.29%)
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 (6.38%)
Victory Global Natural Resources Fund | Class C  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as a percentage of the lower of sale proceeds or the original offering price) rr_MaximumDeferredSalesChargeOverOther 1.00% [3]
Management Fees rr_ManagementFeesOverAssets 1.00%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 0.75%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.75%
Fee Waiver/Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.47%) [2]
Total Annual Fund Operating Expenses After Fee Waiver/Expense Reimbursement rr_NetExpensesOverAssets 2.28% [2]
Expenses Deferred Charges [Text Block] rr_ExpensesDeferredChargesTextBlock Applies to shares sold within 12 months of purchase.
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 331
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 809
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,413
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 3,046
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 231
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 809
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,413
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 3,046
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 (25.86%)
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 (17.77%)
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 (10.15%)
Victory Global Natural Resources Fund | Class R  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as a percentage of the lower of sale proceeds or the original offering price) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 1.00%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.50%
Other Expenses rr_OtherExpensesOverAssets 2.81%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 4.31%
Fee Waiver/Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (2.45%) [2]
Total Annual Fund Operating Expenses After Fee Waiver/Expense Reimbursement rr_NetExpensesOverAssets 1.86% [2]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 189
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,084
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,992
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 4,316
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 (24.79%)
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 (17.40%)
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 (9.79%)
Victory Global Natural Resources Fund | Class Y  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as a percentage of the lower of sale proceeds or the original offering price) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 1.00%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.26%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.26%
Fee Waiver/Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.11%) [2]
Total Annual Fund Operating Expenses After Fee Waiver/Expense Reimbursement rr_NetExpensesOverAssets 1.15% [2]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 117
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 389
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 681
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,513
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 (24.32%)
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 (16.85%)
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 (9.16%)
[1] A contingent deferred sales charge of 0.75% may be imposed on Class A shares with respect to purchases of $1,000,000 or more that are redeemed within 12 months of purchase. For additional information, see the section entitled Choosing a Share Class.
[2] Victory Capital Management Inc., the Fund's investment adviser, ("Adviser") has contractually agreed to waive its management fee and/or reimburse expenses so that the total annual operating expenses (excluding certain items such as interest, taxes and brokerage commissions) do not exceed 1.48%, 2.28%, 1.86% and 1.15% of the Fund's Class A, Class C, Class R and Class Y shares, respectively, through at least April 30, 2021. The Adviser is permitted to recoup advisory fees waived and expenses reimbursed for up to three years after the fiscal year in which the waiver or reimbursement took place, subject to the lesser of any operating expense limits in effect at the time of: (a) the original waiver or expense reimbursement; or (b) the recoupment, after giving effect to the recoupment amount. This agreement may only be terminated by the Fund's Board of Trustees.
[3] Applies to shares sold within 12 months of purchase.